Fast and long games, I think it all points to TSPP !
I find that game to be decently fast, not as stop and go as one would think, especially with the upper right flipper and the upper playfield ones that are designed to keep the peace going.
It has tons of multiballs mode that all play fast and the code depth is unmatched.
Added to that, The Simpsons is a super theme and can provide endless hours of game.